Mar 10, 2012

Improvised Antenna for USB Modem & Extension USB Cable (Smartbro & Globe Tattoo

How to Extend your USB cable using Utp Cable

USB Cable

The USB cable provides four pathways- two power conductors and two twisted signal conductors. The USB device that uses full speed bandwidth devices must have a twisted pair D+ and D- conductors. The data is transferred through the D+ and D- connectors while Vbus and Gnd connectors provide power to the USB device.


USB Wiring connection

The USB cable has typically four wires to connect the A type connector

Red + 5V Pin 1
White D+ Pin 2
Green D- Pin 3
Black Gnd Pin 4



Step by Step Instructions:

1. Green wire from usb(D-) --> ilagay mo sa green wire ng utp.

2. White wire from usb(D+) -->ilagay mo sa white/green ng utp.

3. Red (+5V) from usb --> ilagay mo sa orange + white/orange ng utp.

4. lastly, Black(GND) --> ilagay mo sa brown + white/brown ng utp.

So ung excess na blue + white/blue either na cut mo na lang or gawin mong reserve.

or visit

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Quote:
NOTE:
You should only make 8 meters and below of Utp cable to have the best result, tried and tested by Boss Natzki, Slayer Me, Myself and I.
Use only 1.5 or 2 meters USB extension when you are using a laptop. It is not advisable to use in laptops when the USB extension cable exceeds 1.5 or 2 meters due to insufficient power supply. The laptop might not recognized the Tattoo Modem.. Good Luck!

Another clear instructions from sir slayerquest for those who did not make it work:

1. use 2.0 usb extension nabibili po sa CDR-KING and make sure testingin muna bago bumili para hindi kayo magkaproblema.

2. UTP CAT5 which is white color wire and UTP CAT6 yung blue color wire. Pwede rin ang utp wire ng smartbro cannopy (yung dina ginagamit)

3. TAKE NOTE: Approximately 8 meters ang kayang iextend ng utp cable.. for example 1 meter yung usb extension nio na gusto nyong dugtungan you will need 7 meters of utp wire which is equivalent to 8 meters.

4. For best results, use desktop computer, hindi po gagana sa laptop kasi hindi na kayang supplayan ng power ang extension niyo. 8 meters yung sakin, 1 meter usb extension and 7 meters CAT5 utp entension.

KUHA MO? 


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I already computed the focus of my Improvised Parabolic Dish to maximize its signal gain using this formula:

*Only fully-registered users can see this link.* 



My Improvised Antenna






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My Speedtest as of 6/23/2011



This image has been resized. Click this bar to view the full image. The original image is sized 1314x555.



Quote:
Here is my explanation why negative(-) value RSSI is better than positive(+) value RSSI.

Basic Algebra
-1 is greater than -2

+2 is greater than +1

Speaking of RSSI, mataas ang value nya kung negative na small number like -1 or when the number is closer to zero.

For example, in Mathematics which is bigger?

-1 or -2 ?

my answer is -1.

So, thats why the closer the value of RSSI to ZERO is an indication of good stable connection and signal strength. 



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Compilation of Improvised Antenna
























NOTE: I really do believed that very long usb extension cables can greatly affects the transfer rate of the device because of high resistivity level. Kung gusto nyo ng Effective na usb extension, I suggest na yong 3 meters na usb extension from cdrking kasi hindi matakaw sa power.
Meron kasi ako dito 5 meters pero minsan 0.0kbps ang transfer data nya kung matagal ng naka connect at kung nag ddownload ako after 4 - 5 minutes naddc na cya.

Reactions:

7 comments:

I think you have USB D+ and D- reversed. It is correct on these links:
http://bealecorner.org/best/measure/USB/index.html
http://pinouts.ru/Slots/USB_pinout.shtml

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sir me ask po aq, got confused kc when i used 10mtre usb cable extension pra sa smartbro stick nagwork nman xa sa laptop, but when nitry q sa desktop nde nman mdetect ung smartbro stick for installation..

I am agree with all of your ideas this is really very nice experiment i love it..
Thank you for post.

Samsung Galaxy S3

Hello! I've read your article. It was really helpful & informative. I'll visit your blog again to get new update..

try adjust your USB port in to 1 step higher so that the power will sustained it in to your modem..


go to your USB PORT and Change it!

ahhm, sir, uubra ba kung ang gmitin ko na extention ay yung active repeater cable for my laptop 6 meters?,

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